7.7.4 MUTE ADC SERIAL PORT (MUTE ADC_SP)
Default = 0
0 - Disabled
1 - Enabled
Function:
When enabled, the ADC Serial Port will be muted.
7.8
DAC CHANNEL MUTE (ADDRESS 07H)
7
6
5
4
3
2
1
0
AOUT8_MUTE AOUT7_MUTE AOUT6_MUTE AOUT5_MUTE AOUT4_MUTE AOUT3_MUTE AOUT2_MUTE AOUT1_MUTE
7.8.1 INDEPENDENT CHANNEL MUTE (AOUTX_MUTE)
Default = 0
0 - Disabled
1 - Enabled
Function:
The respective Digital-to-Analog converter outputs of the CS42438 will mute when enabled. The qui-
escent voltage on the outputs will be retained. The muting function is affected by the DAC Soft and
Zero Cross bits (DAC_SZC[1:0]).
7.9
AOUTX VOLUME CONTROL (ADDRESSES 08H- 0FH)
7
6
5
4
3
2
1
0
AOUTx_VOL7 AOUTx_VOL6 AOUTx_VOL5 AOUTx_VOL4
AOUTx_VOL3 AOUTx_VOL2 AOUTx_VOL1 AOUTx_VOL0
7.9.1 VOLUME CONTROL (AOUTX_VOL[7:0])
Default = 00h
Function:
The AOUTx Volume Control registers allow independent setting of the signal levels in 0.5 dB incre-
ments from 0 dB to -127.5 dB. Volume settings are decoded as shown in Table 8. The volume chang-
es are implemented as dictated by the Soft and Zero Cross bits (DAC_SZC[1:0]). All volume settings
less than -127.5 dB are equivalent to enabling the AOUTx_MUTE bit for the given channel.
Binary Code
00000000
00101000
01010000
01111000
10110100
Volume Setting
0 dB
-20 dB
-40 dB
-60 dB
-90 dB
Table 8. Example AOUT Volume Settings
48
DS646PP2
CIRRUS [ CIRRUS LOGIC ]
